Revert "Fix sketch/lcd.cpp:196:1: warning: no return statement in function returning non-void [-Wreturn-type]."

This reverts commit a54fd29fa4d27f74eb05b2be2352c11c8bf1e841.

Firmware/lcd.cpp

@@ -192,7 +192,6 @@ static void lcd_begin(uint8_t clear)
 static int lcd_putchar(char c, FILE *)
 {
 	lcd_write(c);
-  	return c;
 }
 
 void lcd_init(void)

Firmware/lcd.h

@@ -11,6 +11,7 @@
 extern FILE _lcdout;
 
 #define lcdout (&_lcdout)
+extern int lcd_putchar(char c, FILE *stream);
 
 extern void lcd_init(void);